The scientific and common names for Archaebacteria are both Archaea, as of 2014. Archaea used to be considered bacteria, but are now considered their own kingdom and domain separately.
Archaea are distinguished as single-celled organisms with no nucleus. They are found in a wide range of environments, including, but not limited to extreme environments, such as salt lakes, deep-sea thermal vents and hot springs. They are also found in oceans, wetlands, soil and even the human body. They reproduce asexually and do not produce spores, unlike some forms of bacteria. They are often mutualist species; but, they do not cause harm to other organisms, unlike pathogenic bacteria or parasitic fungi.